package com.item.mall.filter;



import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;


public class CartFilter implements Filter {
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest httpRequest =(HttpServletRequest) servletRequest;
        HttpServletResponse httpResponse =(HttpServletResponse) servletResponse;
        HttpSession session = httpRequest.getSession();
        if(session.getAttribute("user")==null){
            httpResponse.sendRedirect("/login.html");
        }else {
            filterChain.doFilter(httpRequest,httpResponse);
        }
    }
}
